package com.testwa.distest.server.websocket.service;public class MessageDefine {    public static final String SYSTEM = "SYSTEM";    public static final String TASK_CANCEL = "TASK_CANCEL";    public static final String APP_INSTALL = "APP_INSTALL";    public static final String APP_UNINSTALL = "APP_UNINSTALL";    /**订阅任务执行的进度**/    public static final String S_TASK = "S_TASK";    /**获得订阅任务的进度**/    public static final String R_TASK = "R_TASK";    /**获得任务完成的消息**/    public static final String R_TASK_COMPLETE = "R_TASK_COMPLETE";}